Gaya APA
S, A. (2010).
Economics 1A : for Senior High School Grade X Semester 1, KTSP Standar isi 2006 .
Jakarta:
Esis Erlangga.
Gaya MLA
S, Alam.
"Economics 1A : for Senior High School Grade X Semester 1, KTSP Standar isi 2006".
Jakarta:
Esis Erlangga,
2010.
Text.